Steel



snare unsure Butternut, on MOOSE raw, sasna'rcrrnwau, canana.

annulment-sources, mm.

tut i-at. lto thawing.

members to which thesolder is united.

The invention consists essentially in the novel admixture of ingredients in or about the proportions named. v

The mixture of ingredients which I have it found gives the most satisfactory results in efiecting a union of aluminium solder with aluminium articles comprises the following ingredients in or about the proportions named: aluminium chlorid, 265' parts; zinc chloricl, 320 parts; borax, 2 parts; paraifin arts.

hese ingredients are all placed together and heated till thoroughly melted and when cooled term a soft paste which is spread over the surface of the material to be soldered. 'lhe paraffin wan forms a binder to unite the aluminium and zinc chloride and the horas Specification of ltettcrs Patent.

- a licants ans lannary n, rare. semi No. araraa.

Moose Jaw;

with a was, 67 parts; beef tallow, 25 parts; sulfur,

Patented. Aug. 5, 1a.,

and used as a; softener to prevent crystallization and hardening of the flux. Ihe beet tallow may possibly be substituted by other forms of grease but the tallow produces the best results in the final use of the flux as it does not discolor or gum up the work, whereas it is found that substitutes for the beefwtallow produce a dirty finish and do not make as uniform a flux.

The flux as herein ough and tenacious unionbetween thealw miniurn solder and the surface of the aluminium parts.

What I claim as my invention is 1. An aluminium solder flux, comprising,

aluminium chlorid, zinc chlorid, borax, sul ful, a suitable blndmg material, and a suitable non-harden ng material.

2. An aluminium solder fluxfconsisting of an admixture in or about the following proportions, aluminium chlorid, 265 parts, zinc, 320 parts, boraX, -2 parts, sultur., 25 parts, parafiin war, 67 parts, and a softening material, 25 parts.

3 An aluminium solder flux, consisting oi? an admixture in or about the following proportions, aluminium chlorid, 265 parts zinc ohlorid, 320 arts, boran, 2 parts, sulfur, 25

parts, para n wax, 6'? parts, beet tallow 25 parts,

Cl-llhltldtifi LESLIE BUNSTEEL.

described effects a thorsulfur and the beet tallow is preferably 4 

